I used to have a problem with crack/heroin and more than once i was hospitalized because of it. Although at the time it was not an intentional overdose. I still remember before and after it but not during, u just slip away silently. No mess just easy to deal with for those who find me. You don’t feel pain or nausea you just go to sleep and hope that no-one finds you to stop the process. For me its just a matter of when and where.